Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (02): 93-100.doi: 10.13475/j.fzxb.20201005008

• Textile Engineering • Previous Articles     Next Articles

Threshold and intensity evaluation of skin wetness perception under dynamic contact with fabrics

ZHANG Zhaohua1,2(), TANG Xiangning1, LI Jun1,2, LI Luyao1   

  1. 1. College of Fashion and Design, Donghua University, Shanghai 200051, China
    2. Key Laboratory of Clothing Design and Technology, Ministry of Education, Donghua University, Shanghai 200051, China
  • Received:2020-10-26 Revised:2020-11-30 Online:2021-02-15 Published:2021-02-23

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Abstract:

To gain insight into how fabrics affect the perception of wetness under dynamic skin contact at different velocities, the influencing mechanism of absolute threshold and intensity of the perception of wetness were investigated. By applying quantitative amounts of water (low, medium, and high) to each of the testing fabrics, participants reported the intensity of perceived wetness on a psychometric scale. In addition, water was supplied continually with a pump until the threshold of wetness was perceived by the participants. At the same time, the temperature sensors were used to record local skin temperature and calculate skin cooling rate. The results indicate that skin cooling rate has a significant positive correlation with wetness intensity rating, while a negative correlation with absolute threshold. The intensity rating of wetness perception is predicted by the physical parameters of the fabrics, that is maximum transient thermal flow, water content, and friction coefficient, while wetness threshold was predicted by wetting time and coefficient of friction. The threshold detection was qualified to evaluate the sensitivity to wetness at the initial detection of moisture on the skin, while the stimulus intensity rating would give a better prediction at the moisture absorption stage. This study provides the evaluation technology for designing clothing with desirable wetness levels.

Key words: fabric, skin, dynamic contact, wetness perception, absolute threshold, intensity rating

CLC Number: 

  • TS941.16

Tab.1

Fabric specification parameters"

组别 试样
编号		 纤维成分 组织 面密度/
(g·m-2)		 厚度/
mm		 透气性/
(mm·s-1)
薄型
(0.67~
0.75 mm)		 L1 棉 100% 纬平针 152 0.70 552.85
L2 麻 100% 纬平针 143 0.72 3 501.85
L3 涤纶100% 纬平针 154 0.75 1 508.81
L4 Coolmax 100% 珠地 148 0.71 936.65
L5 锦/氨纶
(82/18)		 纬平针 164 0.67 1 234.17
厚型
(0.97~
1.03 mm)		 H1 棉 100% 纬平针 224 1.03 457.24
H2 棉 100% 毛圈 202 1.01 343.16
H3 涤纶100% 纬平针 223 0.97 1 040.57
H4 涤纶100% 毛圈 221 1.03 1 070.70
参照 R 棉/涤纶
(65/35)		 纬平针 181 0.79 1 500.01

Fig.1

Testing device for dynamic contact between skin and fabric"

Fig.2

Experimental setup"

Fig.3

Wetness rating scale"

Fig.4

Absolute threshold of wetness perception of fabrics at three velocities"

Fig.5

Wetness perception rating of each fabric under different water contents at contacting velocity of V1 (a); V2 (b) and V3 (c)"

Fig.6

Comparison between wetness rating and wetness threshold detection"

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